About Grindavik, Southern Peninsula's Climate & Weather History

Grindavik, in Southern Peninsula, Iceland, is home to roughly 2,900 people in the Atlantic/Reykjavik time zone at 63.8°N latitude.

In 2025, Grindavik recorded an average annual temperature of 43°F. The hottest temperatures reached 67°F in July; the coolest were 13°F in January. Total precipitation for the year was 63 inches, with the wettest month being September. Snowfall for the year totaled approximately 28 inches.